Huisz, A., S. Sleutel, T. Tóth, G. Hofman, S. De Neve, and T. Németh. 2006. Effect of 
cultivation systems on the distribution of soil organic matter in different fractions. 
Cereal Research Communications. 34: (No.1) 207-210. 

The preliminary results indicate that conventional tillage by frequently disturbing the soil 
structure and making more intensive aerobic microbial breathing decreases OM in soils. 
In the surface layer an increasing trend can be realised in the amount of protected OM 
fractions in the order D+L < D. DD caused less DM of the OM fractions than the two 
other more OM-decomposing tillage (D+L; D). Furthermore all the three reduced tillage 
caused less DM of the mineral-associated OM fraction than P, which is the most 
aggregate disturbing tillage. A similar trend can be realised in the unprotected OM 
fractions in the surface layer. The difference is that these forms of OM are more than 
were measured in P. In the subsurface layer the unprotected OM forms were in the 
highest DM amount in D+L. The protected OM fractions were in the highest DM amount 
in D+L. Further investigates are needed to the optimisation of tillage to decrease the loss 
of the most important food chain element from the soil.